The top of my left hand is hurting. It is very sensitive to the touch, the area is below my middle finger just below the knuckle. I can t even put any kind of pressure on it or touch it because it hurts so bad and it has been like this for about 3 weeks now. What do you think it might be? I m not sure what I did to it but it did have a very large bruise was on it for about a week or so.